Leaning Ladder Equilibrium Problem: Find Minimum Angle

Physics Ninja looks at the leaning ladder problem. Newton's laws are used to find the minimum angle where the ladder remain in equilibrium. The forces and torques are calculated and angle is evaluated.

[nizarch]

Could I just say that your videos are wonderful. Every time I want an explanation for something I learned, physics ninja is around. Thank you :)

[jeremiechopty]

Okay, but i dont understand why the perpendicular force of the friction is sin and not cos. The force of friction is on the end of the ladder, which does not make sense to why you drew it just above. It seems you could draw all the forces on the ladder with sin being the perpendicular. (it seems your just shifting the components around)

[sampasarkar]

You are a genius sir. Your video is so much cool than any other video I watched before. Make many video with problem.

[palakk-x]

Thanks a lot sir, helped me alot!❤
Love from India!

[lucaberti]

Thanks. Helped me a lot with a similar problem.

[rajeshmondal]

Plz make a video on this following problem. A cannon of mass M rests on a horizontal plane having coefficient of friction k. It fires a projectile of mass m with muzzle velocity v in a direction making angle "a" with the horizontal. Determine how far back the cannon will move due to the recoil. Thanks,

[Behindthefightofficial]

Hi! Why does the painter not have a reaction force perpendicular to the ladder?

[harchan]

Thanks a lot sir, this video was really helpful

[junkaccount]

what would you do if the full ladder length was given? I've got the same problem except I have to solve for the coefficient of static friction between the ladder and the ground.

[lidiyamesenbet]

Tank u so much sir keep it up am from africa

[ranitbanerjee]

my question is which force is responsible for slipping off the rod as there is no force acting left side of the bottom of the rod also there is no component of gravitational force acting. So, which force moves the bottom-most point towards the left for slipping.

[fra]

Hi, in your udemy course you found theta max, but maybe you meant theta min... Right? Thanks! 😊

[canopus]

This statics problem is from classical mechanics book written by David Morin!

[likicatzj]

Thank you for the video ! I don't understand why the painter wouldn't have a normal force tho, can someone explain?

[michaellam]

Did anyone watch because they were told to watch on remote learning?

[fftyhhTtyhhgg]

Can this example be extended for motorcycle lean angle?

[harinachiappansubramanian]

why is the normal force not pointing normal to the edge that is at the floor? i thought that in that case, it should be pointing normal to the ladder, instead of the floor

[مصیوف]

Hello,
Could you please help me and say where I can find these questions or similar questions of physics?
Please tell me a website or book or source!
Everything that You tink can help me...
Thanks!❤️

[himadridas]

Why didn't u calculate the torque from the lower end of the ladder that would have been much easier

[mujahid]

N and fs forces must be zero because it is actting on the hang.